A great milkshake is a Kiwi summer staple and this summer Anchor is setting out to find New Zealand's best.

Maybe it's your local café or that quirky ice-cream bar with queues out the door from dawn to dusk.

New Zealand's Best Milkshake Competition calls for Kiwis to get their hands on a milkshake, and decide if their delicious offering deserves the top spot.

People can go online to Bestmilkshake.co.nz/vote to vote for their favourite milkshake.

With four categories to pick from – best protein, best lactose-free, best smoothie or best creative combination milkshake – there's something to cater to every taste.

The top milkshake in the four regions – Upper North Island, Central North Island, Lower North Island and South Island – will be decided by popular vote.

Top regional milkshakes will then be judged by milkshake aficionado Deanna Yang.

Deanna says there's nothing quite like a frothy, sweet milkshake to quench your thirst on a summer's day.

'I'm so looking forward to seeing the amazing creations that will come from all around New Zealand.”

Deanna will be calling on Tirau-based Fonterra farmer Joanne Leigh to help with judging as she travels NZ to find the best in the land.

Voting is open now for Kiwis to pick their favourite milkshake, and closes February 28.